Sorority retention rates?

If you really, really want to find that out, you have to dig around but if you compare the semester scholarship reports you will find it. All you have to do is compare the end of one semester's Total membership with the beginning of the next semester's Active membership.
Here is an example using ADPi (I used them because they were at the top and easy to see, I AM NOT AN ADPi)
Fall 2022:
Active Members 182 (start of fall before recruitment)
Total Members 266 (end of fall after recruitment/COB)
Spring 2023:
Active Members 253 (start of spring)
Total Members 260 (end of spring with COB)
So you can see that 13 of ADPi members did not return after fall semester, and they took 7 new members in spring.

Losing members is a combination of graduation (there are always December grads), members studying abroad or interning, and drops. Drops don't necessarily mean someone did not like their sorority; most often there are family issues back home, transfers to other schools, or financial issues. The numbers vary every semester from house to house, so you actually need to look at three years worth of data to see a trend.

With all that said, the sororities do the choosing and they decide who to invite back from round to round. Your ranks are secondary and you can't pre-pick a house. Also, objective data is not nearly as important as gut feelings in recruitment. This can't be said enough. Go with your gut, not with numbers.

If there are spots open and they have girls they like - they’ll take them. If they don’t have anny girls they like - they won’t. This is not a secret or an hard concept. And to make new girls feel special houses will make sure they fun experience but it’s not the same as the fall. Fall is just its own thing and a formal process.

Do not go off of info you see online. It’s not accurate a lot of the time. I’d say at least 50% of that data isn’t accurate so don’t go on that. Sucks but I’d rather know that that info isn’t reliable before I base a decision off it.

For example — if you have 10 girls go study abroad that means they don’t count. When they return those numbers are added back in. And same with transfers. So theoretically that should mean there could be spots open in the spring - but it’s a loophole. So if they have someone’s sister or a best friend or something and spots open up — they can take them - or take transfers if they have them that show up. Plus — all info is self reported and just incorrect reporting can make these numbers in correct.

Here are the spring numbers… as you can see most sororities are in the same membership ballpark with only a few way off. DZ, AGD, SDT, AOPi … Those are your bottom 4 period! And that’s not being mean. That’s just saying something is off. Maybe during recruitment if asked they will have an explanation.
ΧΩ members 280
ΑΔΠ members 260
ΑΧΩ members 253
ΦΜ members 257
KKΓ members 250

ΔΖmembers 209
ΚΔ members 254

ΠBΦ members 252

ΑΓΔ members 129
ΣΔΤ members 219
ΔΓ members 257
ΚΑΘ members 255

ΑΟΠ members 210
ΑΦ members 255
ZTA members 256
ΓΦB members 239
ΔΔΔ members 262

Sororities with known retention issues:

Dg
Dz
Agd
Aphi

Zeta and tri delta have GREAT girls and they stick around. Why are people trying to tear down perfectly nice organizations. Stop.

Retention isn’t something public. You can ask during recruitment.